Airworthiness Directives; Rolls-Royce Corporation Turbofan Engines, 11327-11329 [2017-03283]

Download as PDF Federal Register / Vol. 82, No. 34 / Wednesday, February 22, 2017 / Proposed Rules (i) Other FAA AD Provisions DEPARTMENT OF TRANSPORTATION The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, New York Aircraft Certification Office (ACO), ANE–170, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the ACO send it to ATTN: Program Manager, Continuing Operational Safety, FAA, New York ACO, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516–228–7300; fax 516–794–5531. Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/ certificate holding district office. (2) Contacting the Manufacturer: As of the effective date of this AD, for any requirement in this AD to obtain corrective actions from a manufacturer, the action must be accomplished using a method approved by the Manager, New York ACO, ANE–170, FAA; or Transport Canada Civil Aviation (TCCA); or Bombardier, Inc.’s TCCA Design Approval Organization (DAO). If approved by the DAO, the approval must include the DAO-authorized signature. (j) Related Information sradovich on DSK3GMQ082PROD with PROPOSALS (1) Refer to Mandatory Continuing Airworthiness Information (MCAI) Canadian Airworthiness Directive CF–2013–16R1, effective July 26, 2016, for related information. This MCAI may be found in the AD docket on the Internet at http:// www.regulations.gov by searching for and locating Docket No. FAA–2016–9575. (2) For service information identified in this AD, contact Bombardier, Inc., Q-Series Technical Help Desk, 123 Garratt Boulevard, Toronto, Ontario M3K 1Y5, Canada; telephone 416–375–4000; fax 416–375–4539; email thd.qseries@aero.bombardier.com; Internet http://www.bombardier.com. You may view this service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on the availability of this material at the FAA, call 425–227–1221. Issued in Renton, Washington, on February 3, 2017. Michael Kaszycki, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2017–03262 Filed 2–21–17; 8:45 am] BILLING CODE 4910–13–P Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2016–9553; Directorate Identifier 2016–NE–29–AD] RIN 2120–AA64 Airworthiness Directives; Rolls-Royce Corporation Turbofan Engines Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: We propose to adopt a new airworthiness directive (AD) for certain Rolls-Royce Corporation (RRC) AE 3007C and 3007C1 model turbofan engines. This proposed AD was prompted by analysis and by cracks found in the high-pressure turbine (HPT) wheel during an inspection. This proposed AD would require replacement of the affected HPT wheels at new, lower life limits. We are proposing this AD to correct the unsafe condition on these products. DATES: We must receive comments on this proposed AD by April 10, 2017. ADDRESSES: You may send comments, using the procedures found in 14 CFR 11.43 and 11.45, by any of the following methods: • Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments. • Fax: 202–493–2251. • Mail: U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE., Washington, DC 20590. • Hand Delivery: Deliver to Mail address above between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For service information identified in this NPRM, contact Rolls-Royce Corporation, 450 South Meridian Street, Mail Code NB–01–06, Indianapolis, IN 46225; phone: 317–230–3774; email: indy.pubs.services@rolls-royce.com; Internet: www.rolls-royce.com. You may view this service information at the FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA. For information on the availability of this material at the FAA, call 781–238– 7125. SUMMARY: Examining the AD Docket You may examine the AD docket on the Internet at http:// www.regulations.gov by searching for and locating Docket No. FAA–2016– VerDate Sep<11>2014 18:06 Feb 21, 2017 Jkt 241001 PO 00000 Frm 00004 Fmt 4702 Sfmt 4702 11327 9553; or in person at the Docket Management Facility between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this proposed AD, the regulatory evaluation, any comments received, and other information. The street address for the Docket Office (phone: 800–647–5527) is in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Kyri Zaroyiannis, Aerospace Engineer, Chicago Aircraft Certification Office, Small Airplane Directorate, FAA, 2300 E. Devon Ave., Des Plaines, IL 60018; phone: 847–294–7836; fax: 847–294– 7834; email: kyri.zaroyiannis@faa.gov. SUPPLEMENTARY INFORMATION: Comments Invited We invite you to send any written relevant data, views, or arguments about this proposal. Send your comments to an address listed under the ADDRESSES section. Include ‘‘Docket No. FAA– 2016–9553; Directorate Identifier 2016– NE–29–AD’’ at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of this proposed AD. We will consider all comments received by the closing date and may amend this proposed AD because of those comments. We will post all comments we receive, without change, to http:// www.regulations.gov, including any personal information you provide. We will also post a report summarizing each substantive verbal contact we receive about this proposed AD. Discussion We learned from RRC that cracks were found in the HPT wheel during an inspection. Investigation determined that, for certain part number (P/N) HPT wheels, incomplete shot peening in the internal shaft fillet resulted in reduced fatigue life. For other affected P/N HPT wheels, the polishing wheel used in the manufacturing process created an unfavorable surface finish, known as ‘‘Black Wheel Polish,’’ that could lead to crack initiation. We are, therefore, lowering the life limits for these affected HPT wheels. These conditions, if not corrected, could result in uncontained failure of the HPT wheels, damage to the engine, and damage to the airplane. Related Service Information Under 1 CFR Part 51 We reviewed RRC Alert Service Bulletin (ASB) AE 3007C–A–72–318, Revision 2, dated September 23, 2016. E:\FR\FM\22FEP1.SGM 22FEP1 11328 Federal Register / Vol. 82, No. 34 / Wednesday, February 22, 2017 / Proposed Rules The ASB provides updated life limits for the affected HPT wheels. This service information is reasonably available because the interested parties have access to it through their normal course of business or by the means identified in the ADDRESSES section. and determined the unsafe condition described previously is likely to exist or develop in other products of the same type design. Proposed AD Requirements FAA’s Determination We are proposing this AD because we evaluated all the relevant information This proposed AD would require replacement of the affected HPT wheels at new, lower life limits. Costs of Compliance We estimate that this proposed AD affects 307 engines installed on airplanes of U.S. registry. We estimate the following costs to comply with this proposed AD: ESTIMATED COSTS Cost per product Labor cost Replacement of HPT wheel (P/N 23062373, 23065891, or 23070664) at reduced life. Replacement of HPT wheel (P/N 23063462, 23065892, 23069116, 23069592, or 23074643) at reduced life. 0 work-hours × $85 per hour = $0 ........... $39,171 (pro-rated cost of part). $39,171 $3,838,758 0 work-hours × $85 per hour = $0 ........... 21,911 (pro-rated cost of part). 21,911 4,579,399 Authority for This Rulemaking Title 49 of the United States Code specifies the FAA’s authority to issue rules on aviation safety. Subtitle I, section 106, describes the authority of the FAA Administrator. Subtitle VII: Aviation Programs, describes in more detail the scope of the Agency’s authority. We are issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III, Section 44701: ‘‘General requirements.’’ Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action. (3) Will not affect intrastate aviation in Alaska to the extent that it justifies making a regulatory distinction, and (4) Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. The Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 14 CFR part 39 as follows: PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: ■ Authority: 49 U.S.C. 106(g), 40113, 44701. sradovich on DSK3GMQ082PROD with PROPOSALS Regulatory Findings We determined that this proposed AD would not have federalism implications under Executive Order 13132. This proposed AD would not have a substantial direct effect on the States, on the relationship between the national Government and the States, or on the distribution of power and responsibilities among the various levels of government. For the reasons discussed above, I certify this proposed regulation: (1) Is not a ‘‘significant regulatory action’’ under Executive Order 12866, (2) Is not a ‘‘significant rule’’ under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), VerDate Sep<11>2014 16:01 Feb 21, 2017 Parts cost Cost on U.S. operators Action Jkt 241001 § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new airworthiness directive (AD): ■ Roll-Royce Corporation (Type Certificate previously held by Allison Engine Company): Docket No. FAA–2016–9553; Directorate Identifier 2016–NE–29–AD. (a) Comments Due Date We must receive comments by April 10, 2017. (b) Affected ADs None. (c) Applicability (1) This AD applies to Rolls-Royce Corporation (RRC) AE 3007C and 3007C1 turbofan engines with 1st stage high-pressure PO 00000 Frm 00005 Fmt 4702 Sfmt 4702 turbine (HPT) wheels, part number (P/N) 23062373, 23065891, or 23070664; or with 2nd stage HPT wheels, P/N 23063462, 23065892, 23069116, 23069592 (except those serial numbers (S/Ns) noted in paragraph (c)(2) of this AD), or 23074643, installed. (2) This AD does not apply to RRC AE 3007C and 3007C1 turbofan engines with 2nd stage HPT wheels, P/N 23069592, with S/Ns listed in Table 6 of RRC Alert Service Bulletin (ASB) AE 3007C–A–72–318, Revision 2, dated September 23, 2016, installed. (d) Subject Joint Aircraft System Component (JASC) Code 7250, Turbine/turboprop Engine, Turbine Section. (e) Unsafe Condition This AD was prompted by analysis and by cracks found in the HPT wheel during an inspection. We are issuing this AD to prevent uncontained failure of the HPT wheels, damage to the engine, and damage to the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (1) For all RRC AE 3007C or C1 engines with an installed 1st stage HPT wheel, P/N 23062373, 23065891, or 23070664, or 2nd stage HPT wheel, P/N 23063462, 23065892, 23069116, 23069592 (except those S/Ns excluded by paragraph (c)(2) of this AD) or 23074643, after the effective date of this AD, remove the affected wheels before exceeding the new life limits identified in paragraph C., Table 1 of RRC ASB AE 3007C–A–72–318, Revision 2, dated September 23, 2016. (2) After the effective date of this AD, do not return to service any engine with an HPT turbine wheel, with an affected P/N and an S/N, with a wheel life that exceeds the new life limits identified in paragraph C., Table 1 of RRC ASB AE 3007C–A–72–318, Revision 2, dated September 23, 2016. E:\FR\FM\22FEP1.SGM 22FEP1 Federal Register / Vol. 82, No. 34 / Wednesday, February 22, 2017 / Proposed Rules (g) Alternative Methods of Compliance (AMOCs) The Manager, Chicago Aircraft Certification Office, FAA, may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make your request. (h) Related Information (1) For more information about this AD, contact Kyri Zaroyiannis, Aerospace Engineer, Chicago Aircraft Certification Office, Small Airplane Directorate, FAA, 2300 E. Devon Ave., Des Plaines, IL 60018; phone: 847–294–7836; fax: 847–294–7834; email: kyri.zaroyiannis@faa.gov. (2) For RRC service information identified in this AD, contact Rolls-Royce Corporation, 450 South Meridian Street, Mail Code NB– 01–06, Indianapolis, IN 46225; phone: 317– 230–3774; email: indy.pubs.services@rollsroyce.com; Internet: www.rolls-royce.com. (3) You may view this service information at FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call 781–238–7125. Issued in Burlington, Massachusetts, on January 27, 2017. Colleen M. D’Alessandro, Manager, Engine & Propeller Directorate, Aircraft Certification Service. [FR Doc. 2017–03283 Filed 2–21–17; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF HOMELAND SECURITY Coast Guard 33 CFR Part 110 [Docket Number USCG–2015–0729] RIN 1625–AA01 Port of Miami Anchorage Area; Atlantic Ocean, Miami Beach, FL Coast Guard, DHS. Supplemental notice of proposed rulemaking. AGENCY: ACTION: The Coast Guard proposes to amend the Miami Anchorage. The Miami Anchorage would be divided into two separate anchorage areas. This action is necessary to reduce potential damage to threatened coral posed by anchoring vessels. We invite your comments on this supplemental proposed rulemaking. DATES: Comments and related material must be received by the Coast Guard on or before March 24, 2017. ADDRESSES: You may submit comments identified by docket number USCG– 2015–0729 using the Federal eRulemaking Portal at http:// www.regulations.gov. See the ‘‘Public Participation and Request for Comments’’ portion of the sradovich on DSK3GMQ082PROD with PROPOSALS SUMMARY: VerDate Sep<11>2014 16:01 Feb 21, 2017 Jkt 241001 SUPPLEMENTARY INFORMATION section for further instructions on submitting comments. FOR FURTHER INFORMATION CONTACT: If you have questions about this proposed rulemaking, call or email MST2 Benjamin R. Colbert, Sector Miami Waterways Management Division, U.S. Coast Guard; telephone 305–535–4317, email Benjamin.R.Colbert@uscg.mil. SUPPLEMENTARY INFORMATION: I. Table of Abbreviations CFR Code of Federal Regulations DHS Department of Homeland Security FR Federal Register NPRM Notice of proposed rulemaking SNPRM Supplemental notice of proposed rule making § Section U.S.C. United States Code II. Background, Purpose, and Legal Basis On December 1, 2015, the Coast Guard published a notice of study (80 FR 75020) that indicated we were evaluating amending the Miami Anchorage to divide the anchorage into two smaller anchorage areas. The proposed amendment was designed in coordination with a variety of local stakeholders, including the South East Florida Coral Reef Initiative (SEFCRI). Comments provided by these stakeholders, academic research, and environmental reports raised concerns with the Coast Guard about the potential for damage to the Florida Reef in the Miami Anchorage. Examples of the body of work that influenced the Coast Guard in proposing the amendment may be found in the docket. In response to the notice of study, the Coast Guard received four comments. These comments were addressed in an NPRM published on May 10, 2016 (81 FR 28788). In response to the NPRM, we received four additional comments. Two of the comments, one by the local nonprofit Miami Waterkeeper and the other by a private citizen, supported our planned modification of the Miami Anchorage. The third and fourth comments were submitted by the Biscayne Bay Pilots Association. The Biscayne Bay Pilots Association (pilots) submitted a comment, through the Port of Miami, on May 17, 2016. This comment requested the Coast Guard to evaluate changes in the proposed anchorage, including shifting the outer anchorage west and shifting the southern boundary of the outer anchorage north. In response to these comments, the Coast Guard met with the Pilots to discuss the requests and the basis at which the Coast Guard arrived PO 00000 Frm 00006 Fmt 4702 Sfmt 4702 11329 at the proposed anchorage configuration. During the meeting, the Coast Guard agreed that shifting the western boundary of the outer anchorage approximately 300 feet to the west would provide more room for large anchoring vessels. This change would not have any effect on coral or hardbottom as the sea floor in that area is sand. On June 11, 2016, the Pilots submitted a follow up comment to the public docket expressing concern that the outer anchorage would expose vessels to increased current and waves and, they claim, could increase the chance a vessel would drag anchor. To properly assess environmental conditions and risk of an anchor drag, the Coast Guard consulted with the National Weather Service and Maersk Training Center. The National Weather Service conducted a study, analyzing the previous year’s current in the vicinity of the anchorage. The Weather Service found that the average current in the area of the outer anchorage over the previous year was approximately 1.2 knots with current ranging plus or minus half a knot from the mean current 70 percent of the time. This information was provided to the Maersk Training Center in Svendborg, Denmark. Subject matter experts at the Training Center indicated that the conditions posed no significant hazard and that Masters would have the training and experience to set an anchor in the deeper waters of the outer anchorage. In addition to consulting with experts, the Coast Guard has made minor changes to the proposed anchorage regulations that would further ensure the safety of all vessels anchoring in the outer anchorage. Vessels using the Miami Anchorage would be prohibited from anchoring with engines off or in a ‘‘dead ship’’ status and would be required to maintain a bridge watch with an English speaking deck officer. Finally, the Coast Guard will submit amendments to the local Coast Pilot to provide improved guidance to vessels planning to anchor in the outer anchorage. In addition to the discussions with the Biscayne Bay Pilots Association and SEFCRI discussed above, the Coast Guard consulted with a number of other stakeholders and subject matter experts in the development of this Supplemental Notice of Proposed Rulemaking (SNPRM). Several biologists from the University of Miami and Nova Southeastern University supported the proposed changes to the Miami Anchorage. The Florida State Historical Preservation Officer determined that there were no known cultural resources E:\FR\FM\22FEP1.SGM 22FEP1

Agencies

[Federal Register Volume 82, Number 34 (Wednesday, February 22, 2017)]
[Proposed Rules]
[Pages 11327-11329]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2017-03283]


-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2016-9553; Directorate Identifier 2016-NE-29-AD]
RIN 2120-AA64


Airworthiness Directives; Rolls-Royce Corporation Turbofan 
Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

-----------------------------------------------------------------------

SUMMARY: We propose to adopt a new airworthiness directive (AD) for 
certain Rolls-Royce Corporation (RRC) AE 3007C and 3007C1 model 
turbofan engines. This proposed AD was prompted by analysis and by 
cracks found in the high-pressure turbine (HPT) wheel during an 
inspection. This proposed AD would require replacement of the affected 
HPT wheels at new, lower life limits. We are proposing this AD to 
correct the unsafe condition on these products.

DATES: We must receive comments on this proposed AD by April 10, 2017.

ADDRESSES: You may send comments, using the procedures found in 14 CFR 
11.43 and 11.45, by any of the following methods:
     Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments.
     Fax: 202-493-2251.
     Mail: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE., Washington, DC 20590.
     Hand Delivery: Deliver to Mail address above between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
    For service information identified in this NPRM, contact Rolls-
Royce Corporation, 450 South Meridian Street, Mail Code NB-01-06, 
Indianapolis, IN 46225; phone: 317-230-3774; email: 
royce.com">indy.pubs.services@rolls-royce.com; Internet: www.rolls-royce.com. You 
may view this service information at the FAA, Engine & Propeller 
Directorate, 1200 District Avenue, Burlington, MA. For information on 
the availability of this material at the FAA, call 781-238-7125.

Examining the AD Docket

    You may examine the AD docket on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2016-
9553; or in person at the Docket Management Facility between 9 a.m. and 
5 p.m., Monday through Friday, except Federal holidays. The AD docket 
contains this proposed AD, the regulatory evaluation, any comments 
received, and other information. The street address for the Docket 
Office (phone: 800-647-5527) is in the ADDRESSES section. Comments will 
be available in the AD docket shortly after receipt.

FOR FURTHER INFORMATION CONTACT: Kyri Zaroyiannis, Aerospace Engineer, 
Chicago Aircraft Certification Office, Small Airplane Directorate, FAA, 
2300 E. Devon Ave., Des Plaines, IL 60018; phone: 847-294-7836; fax: 
847-294-7834; email: kyri.zaroyiannis@faa.gov.

SUPPLEMENTARY INFORMATION: 

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this proposal. Send your comments to an address listed 
under the ADDRESSES section. Include ``Docket No. FAA-2016-9553; 
Directorate Identifier 2016-NE-29-AD'' at the beginning of your 
comments. We specifically invite comments on the overall regulatory, 
economic, environmental, and energy aspects of this proposed AD. We 
will consider all comments received by the closing date and may amend 
this proposed AD because of those comments.
    We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We 
will also post a report summarizing each substantive verbal contact we 
receive about this proposed AD.

Discussion

    We learned from RRC that cracks were found in the HPT wheel during 
an inspection. Investigation determined that, for certain part number 
(P/N) HPT wheels, incomplete shot peening in the internal shaft fillet 
resulted in reduced fatigue life. For other affected P/N HPT wheels, 
the polishing wheel used in the manufacturing process created an 
unfavorable surface finish, known as ``Black Wheel Polish,'' that could 
lead to crack initiation. We are, therefore, lowering the life limits 
for these affected HPT wheels. These conditions, if not corrected, 
could result in uncontained failure of the HPT wheels, damage to the 
engine, and damage to the airplane.

Related Service Information Under 1 CFR Part 51

    We reviewed RRC Alert Service Bulletin (ASB) AE 3007C-A-72-318, 
Revision 2, dated September 23, 2016.

[[Page 11328]]

The ASB provides updated life limits for the affected HPT wheels. This 
service information is reasonably available because the interested 
parties have access to it through their normal course of business or by 
the means identified in the ADDRESSES section.

FAA's Determination

    We are proposing this AD because we evaluated all the relevant 
information and determined the unsafe condition described previously is 
likely to exist or develop in other products of the same type design.

Proposed AD Requirements

    This proposed AD would require replacement of the affected HPT 
wheels at new, lower life limits.

Costs of Compliance

    We estimate that this proposed AD affects 307 engines installed on 
airplanes of U.S. registry.
    We estimate the following costs to comply with this proposed AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                     Cost per      Cost on U.S.
              Action                      Labor cost              Parts cost          product        operators
----------------------------------------------------------------------------------------------------------------
Replacement of HPT wheel (P/N      0 work-hours x $85 per    $39,171 (pro-rated          $39,171      $3,838,758
 23062373, 23065891, or 23070664)   hour = $0.                cost of part).
 at reduced life.
Replacement of HPT wheel (P/N      0 work-hours x $85 per    21,911 (pro-rated            21,911       4,579,399
 23063462, 23065892, 23069116,      hour = $0.                cost of part).
 23069592, or 23074643) at
 reduced life.
----------------------------------------------------------------------------------------------------------------

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue rules on aviation safety. Subtitle I, section 106, describes the 
authority of the FAA Administrator. Subtitle VII: Aviation Programs, 
describes in more detail the scope of the Agency's authority.
    We are issuing this rulemaking under the authority described in 
Subtitle VII, Part A, Subpart III, Section 44701: ``General 
requirements.'' Under that section, Congress charges the FAA with 
promoting safe flight of civil aircraft in air commerce by prescribing 
regulations for practices, methods, and procedures the Administrator 
finds necessary for safety in air commerce. This regulation is within 
the scope of that authority because it addresses an unsafe condition 
that is likely to exist or develop on products identified in this 
rulemaking action.

Regulatory Findings

    We determined that this proposed AD would not have federalism 
implications under Executive Order 13132. This proposed AD would not 
have a substantial direct effect on the States, on the relationship 
between the national Government and the States, or on the distribution 
of power and responsibilities among the various levels of government.
    For the reasons discussed above, I certify this proposed 
regulation:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866,
    (2) Is not a ``significant rule'' under the DOT Regulatory Policies 
and Procedures (44 FR 11034, February 26, 1979),
    (3) Will not affect intrastate aviation in Alaska to the extent 
that it justifies making a regulatory distinction, and
    (4) Will not have a significant economic impact, positive or 
negative, on a substantial number of small entities under the criteria 
of the Regulatory Flexibility Act.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

The Proposed Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

    Authority: 49 U.S.C. 106(g), 40113, 44701.


Sec.  39.13  [Amended]

0
2. The FAA amends Sec.  39.13 by adding the following new airworthiness 
directive (AD):

Roll-Royce Corporation (Type Certificate previously held by Allison 
Engine Company): Docket No. FAA-2016-9553; Directorate Identifier 
2016-NE-29-AD.

(a) Comments Due Date

    We must receive comments by April 10, 2017.

(b) Affected ADs

    None.

(c) Applicability

    (1) This AD applies to Rolls-Royce Corporation (RRC) AE 3007C 
and 3007C1 turbofan engines with 1st stage high-pressure turbine 
(HPT) wheels, part number (P/N) 23062373, 23065891, or 23070664; or 
with 2nd stage HPT wheels, P/N 23063462, 23065892, 23069116, 
23069592 (except those serial numbers (S/Ns) noted in paragraph 
(c)(2) of this AD), or 23074643, installed.
    (2) This AD does not apply to RRC AE 3007C and 3007C1 turbofan 
engines with 2nd stage HPT wheels, P/N 23069592, with S/Ns listed in 
Table 6 of RRC Alert Service Bulletin (ASB) AE 3007C-A-72-318, 
Revision 2, dated September 23, 2016, installed.

(d) Subject

    Joint Aircraft System Component (JASC) Code 7250, Turbine/
turboprop Engine, Turbine Section.

(e) Unsafe Condition

    This AD was prompted by analysis and by cracks found in the HPT 
wheel during an inspection. We are issuing this AD to prevent 
uncontained failure of the HPT wheels, damage to the engine, and 
damage to the airplane.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.
    (1) For all RRC AE 3007C or C1 engines with an installed 1st 
stage HPT wheel, P/N 23062373, 23065891, or 23070664, or 2nd stage 
HPT wheel, P/N 23063462, 23065892, 23069116, 23069592 (except those 
S/Ns excluded by paragraph (c)(2) of this AD) or 23074643, after the 
effective date of this AD, remove the affected wheels before 
exceeding the new life limits identified in paragraph C., Table 1 of 
RRC ASB AE 3007C-A-72-318, Revision 2, dated September 23, 2016.
    (2) After the effective date of this AD, do not return to 
service any engine with an HPT turbine wheel, with an affected P/N 
and an S/N, with a wheel life that exceeds the new life limits 
identified in paragraph C., Table 1 of RRC ASB AE 3007C-A-72-318, 
Revision 2, dated September 23, 2016.

[[Page 11329]]

(g) Alternative Methods of Compliance (AMOCs)

    The Manager, Chicago Aircraft Certification Office, FAA, may 
approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 
to make your request.

(h) Related Information

    (1) For more information about this AD, contact Kyri 
Zaroyiannis, Aerospace Engineer, Chicago Aircraft Certification 
Office, Small Airplane Directorate, FAA, 2300 E. Devon Ave., Des 
Plaines, IL 60018; phone: 847-294-7836; fax: 847-294-7834; email: 
kyri.zaroyiannis@faa.gov.
    (2) For RRC service information identified in this AD, contact 
Rolls-Royce Corporation, 450 South Meridian Street, Mail Code NB-01-
06, Indianapolis, IN 46225; phone: 317-230-3774; email: 
royce.com">indy.pubs.services@rolls-royce.com; Internet: www.rolls-royce.com.
    (3) You may view this service information at FAA, Engine & 
Propeller Directorate, 1200 District Avenue, Burlington, MA 01803. 
For information on the availability of this material at the FAA, 
call 781-238-7125.

    Issued in Burlington, Massachusetts, on January 27, 2017.
Colleen M. D'Alessandro,
Manager, Engine & Propeller Directorate, Aircraft Certification 
Service.
[FR Doc. 2017-03283 Filed 2-21-17; 8:45 am]
 BILLING CODE 4910-13-P